The U.S. Department of Energy has closed a loan of up to $1.9 billion to NextEra Energy to finance the restart of the Duane Arnold Energy Center, the only nuclear power plant in Iowa. The financing, arranged through the department’s Office of Energy Dominance Financing, clears a major financial hurdle for a plant that has sat idle since a 2020 derecho tore off part of its cooling tower and forced an early shutdown.
NextEra Energy is targeting a return to service in 2029, pending approval from the Nuclear Regulatory Commission and completion of equipment inspections and repairs. Once running again, the Palo, Iowa facility would add 615 megawatts of baseload generation to the regional grid, enough to supply roughly 500,000 homes. The plant closed in 2020 after operating for more than four decades, and its restart would mark one of the first attempts in the country to bring a fully decommissioned commercial reactor back into service rather than build a new one.
Officials at the department framed the loan as part of a broader push to expand nuclear capacity to meet rising electricity demand, much of it tied to data centers and artificial intelligence infrastructure. Google has separately agreed to purchase power from the restarted plant under a 25-year deal, a sign of how technology companies are locking in long-term nuclear supply to power server farms.
What has to happen before the plant can restart?
NextEra still needs the Nuclear Regulatory Commission to sign off on reversing the plant’s decommissioning status, a process that includes fresh safety inspections of the reactor vessel, cooling systems and electrical infrastructure that sat dormant for years. The company also has to rehire and retrain a workforce large enough to run the plant, with the project expected to create nearly 1,500 construction jobs and more than 450 permanent operating positions once online.
Linn County officials and Iowa’s congressional delegation have generally supported the restart, citing the jobs and tax base the plant provided before its closure. Some ratepayer advocates have raised questions about how the costs of the restart will be passed on to Iowa utility customers, since Duane Arnold’s power is being sold under long-term contracts rather than through the state’s traditional utility rate structure.
The loan is structured to be repaid from plant revenue over time rather than drawn from federal appropriations directly, similar to other Energy Department loan guarantee programs. If the restart proceeds on schedule, Duane Arnold would become one of the first shuttered U.S. reactors to return to commercial operation, a template the department has suggested it wants to apply to other idled plants around the country.
Sources: U.S. Department of Energy · KCRG
